package  org.example;
import java.io.*;
import java.util.*;
public class Main
{
    public static void main(String[] args) throws IOException
    {
        double x,y,z=0;
        char ch;
        Scanner rd=new Scanner(System.in);
        BufferedReader buf =new BufferedReader(new
                InputStreamReader(System.in));
        System.out.println("请输入X，Y：");
        x=rd.nextDouble();
        y=rd.nextDouble();
        System.out.println("请输入运算符：");
        ch=(char)buf.read();
        switch(ch)
        {
            case'+':z=x+y;break;
            case'-':z=x-y;break;
            case'*':z=x*y;break;
            case'/':z=x/y;break;
            default:System.out.println("输入的运算符不正确哦！");
        }
        System.out.println("运算结果是："+z);
    }
}